1 /* 2 * Product specific probe and attach routines for: 3 * Buslogic BT946, BT948, BT956, BT958 SCSI controllers 4 * 5 * Copyright (c) 1995, 1997, 1998 Justin T. Gibbs 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions, and the following disclaimer, 13 * without modification, immediately at the beginning of the file. 14 * 2. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/sys/dev/buslogic/bt_pci.c,v 1.11 2000/01/17 12:38:00 nyan Exp $ 30 */ 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/bus.h> 36 #include <sys/rman.h> 37 #include <sys/thread2.h> 38 39 #include <bus/pci/pcireg.h> 40 #include <bus/pci/pcivar.h> 41 42 #include "btreg.h" 43 44 #define BT_PCI_IOADDR PCIR_MAPS 45 #define BT_PCI_MEMADDR PCIR_MAPS + 4 46 47 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul 48 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul 49 #define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul 50 51 static int 52 bt_pci_alloc_resources(device_t dev) 53 { 54 int command, type = 0, rid, zero; 55 struct resource *regs = NULL; 56 struct resource *irq = NULL; 57 58 command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1); 59 #if 0 60 /* XXX Memory Mapped I/O seems to cause problems */ 61 if (command & PCIM_CMD_MEMEN) { 62 type = SYS_RES_MEMORY; 63 rid = BT_PCI_MEMADDR; 64 regs = bus_alloc_resource(dev, type, &rid, 65 0, ~0, 1, RF_ACTIVE); 66 } 67 #else 68 if (!regs && (command & PCIM_CMD_PORTEN)) { 69 type = SYS_RES_IOPORT; 70 rid = BT_PCI_IOADDR; 71 regs = bus_alloc_resource(dev, type, &rid, 72 0, ~0, 1, RF_ACTIVE); 73 } 74 #endif 75 if (!regs) 76 return (ENOMEM); 77 78 zero = 0; 79 irq = bus_alloc_resource(dev, SYS_RES_IRQ, &zero, 80 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); 81 if (!irq) { 82 bus_release_resource(dev, type, rid, regs); 83 return (ENOMEM); 84 } 85 86 bt_init_softc(dev, regs, irq, 0); 87 88 return (0); 89 } 90 91 static void 92 bt_pci_release_resources(device_t dev) 93 { 94 struct bt_softc *bt = device_get_softc(dev); 95 96 if (bt->port) 97 /* XXX can't cope with memory registers anyway */ 98 bus_release_resource(dev, SYS_RES_IOPORT, 99 BT_PCI_IOADDR, bt->port); 100 if (bt->irq) 101 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq); 102 bt_free_softc(dev); 103 } 104 105 static int 106 bt_pci_probe(device_t dev) 107 { 108 switch (pci_get_devid(dev)) { 109 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER: 110 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC: 111 { 112 struct bt_softc *bt = device_get_softc(dev); 113 pci_info_data_t pci_info; 114 int error; 115 116 error = bt_pci_alloc_resources(dev); 117 if (error) 118 return (error); 119 120 /* 121 * Determine if an ISA compatible I/O port has been 122 * enabled. If so, record the port so it will not 123 * be probed by our ISA probe. If the PCI I/O port 124 * was not set to the compatibility port, disable it. 125 */ 126 error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO, 127 /*param*/NULL, /*paramlen*/0, 128 (u_int8_t*)&pci_info, sizeof(pci_info), 129 DEFAULT_CMD_TIMEOUT); 130 if (error == 0 131 && pci_info.io_port < BIO_DISABLED) { 132 bt_mark_probed_bio(pci_info.io_port); 133 if (rman_get_start(bt->port) != 134 bt_iop_from_bio(pci_info.io_port)) { 135 u_int8_t new_addr; 136 137 new_addr = BIO_DISABLED; 138 bt_cmd(bt, BOP_MODIFY_IO_ADDR, 139 /*param*/&new_addr, 140 /*paramlen*/1, /*reply_buf*/NULL, 141 /*reply_len*/0, 142 DEFAULT_CMD_TIMEOUT); 143 } 144 } 145 bt_pci_release_resources(dev); 146 device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter"); 147 return (0); 148 } 149 default: 150 break; 151 } 152 153 return (ENXIO); 154 } 155 156 static int 157 bt_pci_attach(device_t dev) 158 { 159 struct bt_softc *bt = device_get_softc(dev); 160 int error; 161 162 /* Initialize softc */ 163 error = bt_pci_alloc_resources(dev); 164 if (error) { 165 device_printf(dev, "can't allocate resources in bt_pci_attach\n"); 166 return error; 167 } 168 169 /* Allocate a dmatag for our CCB DMA maps */ 170 /* XXX Should be a child of the PCI bus dma tag */ 171 if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0, 172 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 173 /*highaddr*/BUS_SPACE_MAXADDR, 174 /*filter*/NULL, /*filterarg*/NULL, 175 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 176 /*nsegments*/BUS_SPACE_UNRESTRICTED, 177 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 178 /*flags*/0, &bt->parent_dmat) != 0) { 179 bt_pci_release_resources(dev); 180 return (ENOMEM); 181 } 182 183 /* 184 * Protect ourself from spurrious interrupts during 185 * intialization and attach. We should really rely 186 * on interrupts during attach, but we don't have 187 * access to our interrupts during ISA probes, so until 188 * that changes, we mask our interrupts during attach 189 * too. 190 */ 191 crit_enter(); 192 193 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) { 194 bt_pci_release_resources(dev); 195 crit_exit(); 196 return (ENXIO); 197 } 198 199 error = bt_attach(dev); 200 crit_exit(); 201 202 if (error) { 203 bt_pci_release_resources(dev); 204 return (error); 205 } 206 207 return (0); 208 } 209 210 static device_method_t bt_pci_methods[] = { 211 /* Device interface */ 212 DEVMETHOD(device_probe, bt_pci_probe), 213 DEVMETHOD(device_attach, bt_pci_attach), 214 215 { 0, 0 } 216 }; 217 218 static driver_t bt_pci_driver = { 219 "bt", 220 bt_pci_methods, 221 sizeof(struct bt_softc), 222 }; 223 224 static devclass_t bt_devclass; 225 226 DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, NULL, NULL); 227